To develop apps based on Material Design Patterns you need to add Material Icons, but I find the Material Icons Guide frustrating and needs a lot of work. This plugin helps you build Material Design Icons in a couple of steps.

Minimap
If you have used editors like Sublime, CodeGlance might be what you need to make your IDE more enjoyable and easier to navigate large class files.

ADB over Wifi
This is simple plugin that let’s you debug Android apps over Wi-Fi, which is pretty cool if you ask me.

ADB Commands

ADB Idea aims to speed up the day of an Android developer by giving access to crucial terminal commands. I found this tool helpful after the release of Android Studio 2.0, and the addition of Instant Run. Whilst it’s a great feature, sometimes the quick build doesn’t pick up small changes and you have to rebuild and reinstall the project. This makes quick access to ADB commands invaluable.

Generate Parcelable Objects
At some point during app development, you will have to deal with Parcelable objects in java. Parcelable objects send data to different components of an application, system components, or other applications installed on the device. When an app needs Parcelables, developers need to build them manually, or can use the Parcelable boilerplate code generation tool to generate an implementation based on fields of the Parcelable class.

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